[Study on the influencing factors of hepatitis B vaccine timely birth dose for infants born at hospitals].

Objective: To study the coverage of timely birth dose of HepB vaccine (HepB1) and reasons contributed to the non-timely of HepB1 for the infants delivered in the hospital of remote and poverty areas in Yunnan province, and to bring forword the special strategies to improve the coverage of HepB of infants born at those hospitals.

Methods: According to the reported coverage and the estimated coverage of HepB1 vaccine, the HepB coverage of infants born at hospitals was investigated by sampling in Zhaotong and Xishuangbanna in 2007.

Results: The average coverage of HepB1 of infants born at the local hospitals was 67.19%, and the HepB1 coverage of infant was higher in county hospitals than in township hospitals. Infants with premature, low birth weight and asphyxia and the shortage of HepB vaccine were the mainly reasons to the non-timely HepB1 of infants born at hospitals.

Conclusion: The HepB1 coverage of infants was still keep at low level in the local hospital; and to assure enough HepB vaccine in the village hospitals and to grasp immunization contraindication correctly were the two key strategies to promote the HepB1 coverage for infants born at the local hospitals.